Accession Number : ADA553531


Title :   Characterization of Contaminant Migration Potential Through In-Place Sediment Caps


Descriptive Note : Final rept.


Corporate Author : MARYLAND UNIV BALTIMORE


Personal Author(s) : Gidley, Philip ; Kwon, Seokjoon ; Ghosh, Upal


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a553531.pdf


Report Date : Jun 2011


Pagination or Media Count : 78


Abstract : By isolating contaminated sediments, capping can effectively reduce exposure to contaminants and the potential for contaminant transport into the food chain. However, typical sand caps have little sorption capacity to retard the transport of hydrophobic contaminants such as PAHs that can be mobilized by groundwater flow. The primary objective of this research was to develop and improve engineering tools for more efficient cap designs by enhancing the scientific understanding of organic contaminant transport through sediment caps and the role of sorbent amendments in enhancing cap performance. Laboratory column experiments were performed using contaminated sediments and capping materials obtained from a creosote contaminated EPA Superfund site. The study examined activated carbon and peat moss amendments to the cap as ways to enhance contaminant retardation.


Descriptors :   *CONTAMINANTS , *SEDIMENTS , CAPPING , EXPOSURE(GENERAL) , FOOD CHAINS , GROUND WATER , MIGRATION , SORPTION , WATER FLOW


Subject Categories : Physical Chemistry
      Hydrology, Limnology and Potamology


Distribution Statement : APPROVED FOR PUBLIC RELEASE